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The λ Boo and Related Stars

Published online by Cambridge University Press:  12 April 2016

M. Gerbaldi  and
R. Faraggiana
M. Gerbaldi
Affiliation:
Institut d’Astrophysique - 98bis, Bd. Arago - 75014Paris- France
R. Faraggiana
Affiliation:
Dipartimento di Astronomia - via Tiepolo 11 - 34131 Trieste -Italy

Abstract

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The main properties of this class of rare objects are described, and the criteria selected for discovering new members are indicated. The abundance anomalies, resulting from the scanty analyses made up to now, are discussed together with the theoretical interpretation proposed in the framework of the modified diffusion theory and of the recent selective accretion proposal.

Finally, we discuss the evolutionary stage of the λ Boo stars which, in the HR diagram, lie near, but not on the main sequence.

Type
IV. Related Stars
Information
International Astronomical Union Colloquium , Volume 138: Peculiar versus Normal Phenomena in A-Type and Related Stars , 1993 , pp. 368 - 382
Copyright
Copyright © Astronomical Society of the Pacific 1993

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